✨ 最佳解答 ✨ Mer 2個月以前 6. EF = 9/4,FG = 3,GH = FC = 9-BF = 9-(9/4) = 27/4 EF+FG+GH = (9/4)+(27/4)+3 = 12 8. OD : DE = OA : AB AB = 2 OD : DE = OB : BC BC = 3 OC = 6+3 = 9 9. EH//FG,EF//HG,所以EFGH是平行四邊形 AE : AB = EH : BD EH = 7 EFGH = 7*8 = 56 10. BC : CA = 2 : 3 = 3 : x x = 9/2 Mer 2個月以前 8 是平行四邊形 EFGH的高 AE : EB = AI : IO 1 : 2 = AI : IO AO = 6,所以 IO = 4 ZY 2個月以前 理解了!!謝謝謝謝~🫶🏻 留言
8 是平行四邊形 EFGH的高
AE : EB = AI : IO
1 : 2 = AI : IO
AO = 6,所以 IO = 4